Outline is a service that allows for collaborative documentation. From 0.84.0 to 1.6.1, a logic error in OAuthInterface.validateScope() uses Array.some() to validate requested OAuth scopes, causing the function to accept the entire scope array if any single scope is valid. An attacker can smuggle the wildcard * scope by requesting scope=read *, escalating a read-only OAuth token to full unrestricted API access including write, delete, and admin operations. This vulnerability is fixed in 1.7.0.

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History

Mon, 11 May 2026 22:00:00 +0000

Type Values Removed Values Added
Description Outline is a service that allows for collaborative documentation. From 0.84.0 to 1.6.1, a logic error in OAuthInterface.validateScope() uses Array.some() to validate requested OAuth scopes, causing the function to accept the entire scope array if any single scope is valid. An attacker can smuggle the wildcard * scope by requesting scope=read *, escalating a read-only OAuth token to full unrestricted API access including write, delete, and admin operations. This vulnerability is fixed in 1.7.0.
Title Outline: OAuth Scope Validation Logic Error Allows Privilege Escalation to Wildcard API Access
Weaknesses CWE-269
References
Metrics cvssV3_1

{'score': 8.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-05-11T21:06:16.529Z

Reserved: 2026-05-04T15:17:09.330Z

Link: CVE-2026-43886

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-05-11T22:22:13.350

Modified: 2026-05-11T22:22:13.350

Link: CVE-2026-43886

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-11T23:45:03Z

Weaknesses